Disk valve



Jan. 31, 1928. 1,657,741

. J. o. CARREY DISK VALVE Filed Dec. 12.- 1924 2 Sheets-Sheet l 7 7 l ly jzz/efzor e/o/zrz Carrey Jan. 31, 1928. 1,657,741

J. c. CARREY nIsx'vALvE `Filed Dec. 12, 1924 2 Sheets-Sheet 2 fit1/era 02' e/oa 0. Carrey Patented' Jan. 3-1, 1928.

UNITED STATES vim'rairr OFFICE.

JOHN O. CARIBEVY, OF ST. LOUI'S, MISSOURI, ASSIGNOB T0 CABBEY-MOBSE ENGINEEB'-- i ING COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

DISK VALVE.

Application led December 12, 1924. Serial No. 755,573.

l.This invention relates to new and-useful improvements in displaceable disk valves for compressors and the like, and the objects of the invention are to provide a valvie.-

when said disk valve is displaced the com-- pressed fluid can, by means of said passageways, pass freely from the compression chamber to the pressure chamber and hence to the discharge connection leading from the 2o latter.

Still further objects of the invention are to rovide the opposed faces of said valve wit non-metallic inserts or facingsfpreferably made of ber, whichvare designed to 25 alternatel engage the respective walls of the pressure c amber and prevent the contacting of the valve itself with said walls, thereby producing noiseless operation of the valve.

With these and other objects in view, my invention consists in certain novel features of construction and arrangement of parts hereinafter more fully described an claimed, and illustrated in the accompanyindrawings, in whichigure l is a vertical cross section taken longitudinally through the upper end of the compressor cylinder and showing the piston thereof in its extreme upward position and showing the disk valve in displaced position.

Figure 2 is a similar view showing the piston at the beginning of its downward movement and showing the disk valve seated against the compression chamber and closing the communication between the latter and the pressure chamber.

Figure 3 is a similar view showing the piston moving upwardly and showing the disk valve in readiness to be displaced by the pressure in the compression chamber.

Figure 4 is a horizontal cross section taken on lines 4--4 of Fi ure 2.

Figure 5 is an en arged cross section taken on 1ines55 of Figure 4.

Figure 6 is a vertical cross section taken longitudinally 'of the discharge end of the'- machine and showing a modified construetion of the valve.

Figure 7 is a horizontal cross section taken i on; lines 7 7 of Figure 6 looking in the direction indicated by arrows.

Figure 8 is a further modified form ofthe valve. y

Figure 9 is an enlarged fragmental cross section showing the valve seat equipped with a non-metallic lining.

The present invention is an improvement on the construction shown in my copending application filed October 24, 1924,. Serial No. 745,655. p

Referring by numerals to the accompanying drawings, 10 indicates a c linder of a compressor or other iiuid mac ine, having a compression chamber 11 in which operates a piston 12. This piston is provided with a head or cap 14 which is provided in its end wall with a series of apertures 15 and which is displaceable during the down- I ward or intake stroke of the piston, whereby the compressible fluid can pass from the interior,l ofthe piston through said apertures into the compression chamber 11. The upper end of cylinder 10 is enlarged as indicated at 10 to form an annular seat 10b and apressure chamber 16. A plate 17 is secured to the enlarged end 1Q in any suitable manner and closes the compression chamber 15. Leading from plate 17 is a discharge connection 19 through which the compressed liuid is conveyed away from the pressure chamber.

Operating in the pressure chamber 16 is a disk valve 20, the diameter of which is less than the inner diameter of said pressure chamber 16, thereby providing annularly disposed spaces or. recesses 21 which permit the Huid to pass freely around said valve.

Formed integral with and projecting fromv the annular edge of the valve or disk 20 is a series of radially dis osed lugs 20a which slidably bear against t e inner wallof enlarged head 10 and serve to maintain said valve in proper spaced relation in said chamber and prevent loose play of said disk valve in chamber 16. r1`he lower face of disk 20 is provided with an annular seat 22 for the" reception of a ber washer 24 which, when said valve occupies closed position, seats itself on seat 10" and seals the communication between the compression chamber 11 and pressure chamber 16. Furthermore, the provision of a non-metallic insert in that portion of valve 2O which engages the metallic seatlOb eliminates noises and knocking during the operation of said valve.

Washer 24 is removable and can be replaced when worn out or defective, thereby v eliminating expensive machine operations on the valve. The upper face of disk valve 20 is formed with a circular groove 25 in which is adapted to be seated a rin 26, the u er or projecting portion of wluch is rov1 ed with a series of notches or sca ops 26, which, when said valve occupies displaced or upward position, as shown in Figure 1, allow the com ressed Huid to ass from the pressure cham er 16 to the scharge connection 19. At the same time ring 26, being made of fiber, serves as a cushion and provides for noiseless operation of the valve. In order toprovide for contraction of ring 26 without danger of buckling or warping, said ring is of less width than the width of seat 22, thereby permitting said ring a certain degree of free movement and assuring accurate seating of said ring. The ring is held in place b a retainer plate 23 secured to the underslde of valve 20 by screws 23n and havin its annular edge overlapping the inner e ge of said ring.

- In the modified form shown in Figures 6 and 7 a fiber ring 28 is seated in a groove 29 formed in the underside of cylinder and plate and extends downwardly therefrom toward valve 20. Thus when the valve is moved upward, it is held spaced from cylinder plate 17 so that the fluid can pass from the pressure chamber 16 to the discharge connection 19. The ring 28 is provided with openings or notches 30 for permitting free `passage of Huid therethrough.

In the form shown in Figure 8, instead of furnishing the underface of valve 2O with a fiber or non-metallic washer, the entire face is provided with non-metallic facing 31 which is secured in position in any suitable manner, such as screws 32.

The modified form shown in Figure 9 discloses a non-metallic member 34 arranged on the annular edge 10b of the cylinder 10 and serving as a seat for valve 20.

A valve of my improved construction is simple in construction and operation, is not dependent on spring action to seat itself and the provision of non-metallic members prevents contacting of the metal surfaces of the valve with the walls of the housin or chamber, thereby eliminating noise an prolonging the life of the valve.

It is obvious that minor chan es in the construction of my im roved va ve can be made and substituted or those herein disl` closed, without departing from the spirit of mg invention.

claim:

1. A disk valve for compressors provided in its upper face with a circular groove and a ring of non-1netallic material seated in said groove and provided in its projecting. edge with a series of notches.

2. A disk valve of the class described provided in its upper face with a circular groove, a ring of non-metallic material seated in said groove and provided in its projecting ed e with a series of notches, and a non-metal 1c washer arranved in an annular seat formed in the underside. of said disk and adapted to engage the valve seat.

3. A disk valve provided in its u per face with upwardly presented nonmeta l1c spacing projections, and a non-metallic washer arranged in an annular seat formed in the underside of said disk and adapted to form aseal for said valve.

4. In a valve construction, the combination with a valve housing having a discharge openin at one end and an annular valve seat at t e opposite end, of a circular valve freely arranged in said chamber and provided with a non-metallic facing adapted when said valve is in one position to rest on said annular seat, thereby sealing access to said chamber, said valve being provided on its op osite face with non-metallic projections or spacing said valve from said discharge opening for permitting discharge of fluid therethrough.

5. In a valve construction, the combination with a valve housin ,of a circular valve loosely arranged in saidousing for controle ling the admission of iiuid thereto, said housing being provided with a seat for receiving said valve, a non-metallic circular member interposed between said valve and said seat for establishing Huid-tight seal therebetween and preventmg contacting of the metallic parts thereof, and non-metallic spacers interposed between said valve and the discharge end of said housing for spacing said va ve from the discharge outlet of said chamber.

6. In a valve construction, the combination with a valve housing, of a disk valve arranged for axial movement therein, and a non-metallic spacing ring arran ed between said valve and said housin an carried by one of said elements and aapted to engage the other, thereby preventing the Contactin of the metal surfaces of said elements an eliminating noise produced thereby, said ring having portions of its projecting edge cut away to provide for passage between said elements.

In testimony whereof I hereunto affix my signature this 4th da of December, 1924.

JyOHN O. CARREY. 

